Scarlet fever is an infection that may develop after strep throat. It usually affects children between six and 15 years old. It can cause a rash that consists of small red bumps and feels like sandpaper.

A middle ear infection (otitis media) occurs when the area behind the eardrum becomes inflamed and fluid filled as a result of an infection or allergies. The condition is most common in children. It can cause pain, fever, balance loss, and more.

Peritonsillar abscess is a common bacterial infection that usually results from untreated strep throat or tonsillitis. Swollen glands in the throat and jaw, as well as a sore throat, can be signs of this condition.

One of the most important structures in your inner ear is the mastoid bone. Although it's called a bone, the mastoid does not have the typical structure associated with bones in the human body. Rather than being solid and rigid like most bones, th...